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Topic Review (Newest First)

04-29-2012 08:05 AM

65elky

383 afr heads tuning

mine is pump gas i run 750dp factory 70 jets in front 80 in rear and runs 12.8 on afr meter 18 initial and 36 all in at 2500 rpm

07-05-2003 10:13 AM

CAD

.

07-05-2003 09:16 AM

1BAD80

With out getting to much in timing, if it was retarded it shouldnt keep running on when shut off, it would be missing and sometimes a backfire, advance unit may be sticking.
It sounds like a jetting problem. Go down 3 jet sizes if really black on the plugs. Just because the carb ran good on one engine dont mean it will run great on another even if the same type.
Holly has a free downloadable manual and troubleshooters guide that you may want to print out. Please email me if you need any other help.http://www.holley.com/HiOctn/TechSer...o/FMCTech.html